Question

我试图只获取文件夹中的文件，不包括任何其他目录。但是下面的脚本正在将所有文件和文件夹移动到另一个目录。

while True:
    # Go through each of the directories
    for mylist in dirlist:
        check_dir = mylist[0]
        callback = mylist[1]

        # get the list of files in the directory
        filelist = os.listdir(check_dir)
        for this_file in filelist:
            if ((this_file == ".") or (this_file == "..") or (this_file == "donecsvfiles") or (this_file == "doneringofiles")):
                print "Skipping self and parent"
                continue

            full_filename = "%s/%s"%(check_dir, this_file)

Answer 1

在 os.path 中，有一些有用的isdir()和isfile()函数：

public KeyboardService() {
    keyboardPopup = KeyBoardPopupBuilder.create().initLocale(Locale.GERMAN).build();
    keyboardPopup.setAutoHide(true);
    keyboardPopup.setConsumeAutoHidingEvents(false);
    keyboardPopup.getKeyBoard().setScale(2.5);
    keyboardPopup.getKeyBoard().setLayer(DefaultLayer.DEFAULT);

    keyboardPopup.getKeyBoard().setOnKeyboardCloseButton((e) -> {
        keyboardPopup.hide();
    });

    // listen to width changes and center 
    keyboardPopup.widthProperty().addListener((obs, ov, nv) -> {
        keyboardPosX = (screenWidth - nv.doubleValue()) / 2d;
        keyboardPopup.getScene().getWindow().setX(keyboardPosX);
    });
}

public void showKeyboard(Node node) {
    keyboardPosX = (screenWidth - keyboardPopup.getWidth())/2;
    keyboardPosY = screenHeight;
    keyboardPopup.show(node, keyboardPosX, keyboardPosY);
}

此外，您可以使用os.walk()或os.scandir()自动将两者分开：

>>> import os
>>> import os
>>> os.path.isfile('demo.py')
True
>>> os.path.isdir('demo.py')
False
>>> os.path.isfile('__pycache__')
False
>>> os.path.isdir('__pycache__')

Answer 2

您可以使用pd.to_timedelta(df['ride_duration'].astype(str).replace(r"\s+","",regex=True))中的isfile来检查路径是否为文件。此代码为您提供文件夹中的文件列表：

os.path

Answer 3

Python 3.5+提供了一个生成器，它通常比列表推导和循环更有效。您可以通过for i in arr进行遍历，通过next(arr)进行迭代，也可以通过list(arr)获取完整列表。

import os

arr = os.scandir('H:\public\python')  # returns a generator

Answer 4

几乎直接来自docs：

import os

with os.scandir('.') as it:
    for entry in it:
        if entry.is_file():
            print(entry)

在Python中区分文件和目录

4 个答案: